JPH06121473A - Changeover device for variable-voltage to variable-frequency converter - Google Patents
Changeover device for variable-voltage to variable-frequency converterInfo
- Publication number
- JPH06121473A JPH06121473A JP4267118A JP26711892A JPH06121473A JP H06121473 A JPH06121473 A JP H06121473A JP 4267118 A JP4267118 A JP 4267118A JP 26711892 A JP26711892 A JP 26711892A JP H06121473 A JPH06121473 A JP H06121473A
- Authority
- JP
- Japan
- Prior art keywords
- frequency converter
- variable
- variable frequency
- variable voltage
- voltage variable
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Pending
Links
Abstract
Description
【０００１】[0001]
【産業上の利用分野】この発明は、可変電圧可変周波数
変換器の故障時に予備の可変電圧可変周波数変換器と切
り換える可変電圧可変周波数変換器の切換装置に関する
ものである。BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a variable voltage variable frequency converter switching device for switching to a spare variable voltage variable frequency converter when a variable voltage variable frequency converter fails.
【０００２】[0002]
【従来の技術】図２は従来の可変電圧可変周波数変換器
の切換装置を示す構成図である。図において、１は商用
電源（以下電源という）、２は電源１と接続された可変
電圧可変周波数変換器、５は可変電圧可変周波数変換器
２から電力を供給される電動機等の負荷、６は一端が可
変電圧可変周波数変換器１と接続され、他端が負荷５と
接続された複数極のスイッチからなる切換器である。上
記２，６で負荷４に電力を供給できる可変電圧可変周波
数変換装置３が形成される。図示の可変電圧可変周波数
変換器の切換装置は、第１の可変電圧可変周波数変換装
置７ａで第１の負荷４ａを、第２の可変電圧可変周波数
変換装置７ｂで第２の負荷５ｂをそれぞれ駆動できるよ
うにし、予備の可変電圧可変周波数変換器２ｃは第１と
第２の切換器２ａ，２ｂと接続されている。2. Description of the Related Art FIG. 2 is a block diagram showing a conventional switching device for a variable voltage variable frequency converter. In the figure, 1 is a commercial power source (hereinafter referred to as a power source), 2 is a variable voltage variable frequency converter connected to the power source 1, 5 is a load such as an electric motor which is supplied with power from the variable voltage variable frequency converter 2, and 6 is It is a switcher including a switch having a plurality of poles, one end of which is connected to the variable voltage variable frequency converter 1 and the other end of which is connected to the load 5. The variable voltage variable frequency conversion device 3 capable of supplying electric power to the load 4 is formed by the steps 2 and 6. The switching device of the illustrated variable voltage variable frequency converter drives the first load 4a with the first variable voltage variable frequency converter 7a and drives the second load 5b with the second variable voltage variable frequency converter 7b. As a result, the spare variable voltage variable frequency converter 2c is connected to the first and second switches 2a and 2b.
【０００３】次に動作について説明する。第１の負荷５
ａと第２の負荷５ｂとは、それぞれ第１の切換器６ａ，
５ｂを投入することによって、第１と第２の可変電圧可
変周波数変換器２ａ，２ｂからそれぞれの負荷５ａ，５
ｂに電力が供給され駆動される。上記のように負荷５
ａ，５ｂを可変電圧可変周波数変換器２ａ，２ｂで駆動
中に、例えば第１の可変電圧可変周波数変換器２ａが故
障した場合には、第１の切換器６ａが第１の可変電圧可
変周波数変換器２ａと接続された一方の極を解放し、他
方の極を投入して予備の可変電圧可変周波数変換器２ｃ
を第１の負荷５ａと接続する。これによって、第１の負
荷５ａは予備の可変電圧可変周波数変換器２ｃによって
運転が継続される。Next, the operation will be described. First load 5
a and the second load 5b are respectively the first switch 6a,
By turning on 5b, the loads 5a and 5 from the first and second variable voltage variable frequency converters 2a and 2b, respectively.
Electric power is supplied to b and it is driven. Load 5 as above
When the first variable voltage variable frequency converter 2a fails while driving the variable voltage variable frequency converters 2a and 2b, for example, when the first variable voltage variable frequency converter 2a fails. One pole connected to the converter 2a is released, and the other pole is turned on to make a spare variable voltage variable frequency converter 2c.
Is connected to the first load 5a. As a result, the operation of the first load 5a is continued by the spare variable voltage variable frequency converter 2c.
【０００４】[0004]
【発明が解決しようとする課題】従来の可変電圧可変周
波数変換器の切換装置は以上のように、予備の可変電圧
可変周波数変換器２を必要とするので、装置が高価とな
り経済性が悪いという問題点があった。As described above, the conventional switching device of the variable voltage variable frequency converter requires the spare variable voltage variable frequency converter 2, so that the device is expensive and the economy is poor. There was a problem.
【０００５】この発明は上記のような問題点を解消する
ためになされたもので、装置の価格を低減し経済性のよ
い可変電圧可変周波数変換器の切換装置を得ることを目
的とする。The present invention has been made in order to solve the above problems, and an object thereof is to obtain a switching device for a variable voltage variable frequency converter which reduces the cost of the device and is economical.
【０００６】[0006]
【課題を解決するための手段】この発明に係わる可変電
圧可変周波数変換器の切換装置は、第１と第２の可変電
圧可変周波数変換器と負荷に電力を供給する第１と第２
の切換器とを相互に接続するとともに、第１と第２の切
換器のそれぞれに商用電源を接続したものである。A switching device for a variable voltage variable frequency converter according to the present invention includes first and second variable voltage variable frequency converters and first and second power supplies for supplying power to a load.
And the commercial power source is connected to each of the first and second switching devices.
【０００７】[0007]
【作用】この発明における可変電圧可変周波数変換器の
切換器は、複数台の可変電圧可変周波数変換器の一方が
故障すると、他方の可変電圧可変周波数変換器または商
用電源のいずれかを負荷と接続する。In the switch of the variable voltage variable frequency converter according to the present invention, when one of the plurality of variable voltage variable frequency converters fails, the other variable voltage variable frequency converter or the commercial power source is connected to the load. To do.
【０００８】[0008]
【実施例】実施例１．以下この発明の実施例１による可
変電圧可変周波数変換器の切換装置を図について説明す
る。図１はこの発明の実施例１による可変電圧可変周波
数変換器の切換装置を示す構成図である。図において、
１，２，５は従来のものと同様のため説明を省略する。
３は可変電圧可変周波数変換器２と負荷５との間に接続
された切換器で、複数極のスイッチによって構成されて
いる。上記可変電圧可変周波数変換器２と切換器３で可
変電圧可変周波数変換装置４が形成される。図示の可変
電圧可変周波数変換器の切換装置は、第１の可変電圧可
変周波数変換装置４ａで第１の負荷５ａを、第２の可変
電圧可変周波数変換装置４ｂで第２の負荷５ｂをそれぞ
れ駆動できるようにし、第１と第２の切換器３ａ，３ｂ
は、それぞれ第１と第２の可変電圧可変周波数変換器２
ａ，２ｂから電力の供給を受けることができるように接
続されるとともに、電源１とそれぞれ接続されている。EXAMPLES Example 1. A switching device for a variable voltage variable frequency converter according to a first embodiment of the present invention will be described below with reference to the drawings. 1 is a block diagram showing a switching device of a variable voltage variable frequency converter according to a first embodiment of the present invention. In the figure,
Descriptions of 1, 2, and 5 are omitted because they are the same as conventional ones.
A switch 3 is connected between the variable voltage variable frequency converter 2 and the load 5 and is composed of a switch having a plurality of poles. The variable voltage variable frequency converter 2 and the switch 3 form a variable voltage variable frequency converter 4. The switching device of the illustrated variable voltage variable frequency converter drives the first load 5a by the first variable voltage variable frequency converter 4a and the second load 5b by the second variable voltage variable frequency converter 4b. So that the first and second switching devices 3a, 3b
Are respectively the first and second variable voltage variable frequency converters 2
They are connected so that they can be supplied with power from a and 2b, and are also connected to the power source 1, respectively.
【０００９】次に動作について説明する。図１におい
て、第１の切換器３ａの図示左端のスイッチを投入する
ことにより第１の負荷５ａが駆動される。第２の負荷５
ｂの駆動も同様に行われる。ここで、第１と第２の可変
電圧可変周波数変換器２ａ，２ｂのうち一方が故障した
場合、例えば第１の可変電圧可変周波数変換器２ａが故
障したとき、第１の切換器３ａの図示左端のスイッチを
解放し、図示中央のスイッチを投入すると、第１の負荷
５ａは第２の可変電圧可変周波数変換器２ｂから電力の
供給を受けて駆動される。また、第１の切換器３ａの図
示右端のスイッチを投入すると、電源１の電力で第１の
負荷５ａを駆動することもできる。この場合、故障した
第１の可変電圧可変周波数変換器２ａが故障復帰した後
は、第１の切換器３ａを正常状態に切り換え操作すれば
よい。Next, the operation will be described. In FIG. 1, the first load 5a is driven by turning on the switch at the left end of the first switch 3a in the figure. Second load 5
The drive of b is performed similarly. Here, when one of the first and second variable voltage variable frequency converters 2a and 2b fails, for example, when the first variable voltage variable frequency converter 2a fails, the first switching device 3a is illustrated. When the switch at the left end is released and the switch at the center of the drawing is turned on, the first load 5a is driven by being supplied with power from the second variable voltage variable frequency converter 2b. Further, the first load 5a can be driven by the power of the power supply 1 by turning on the switch at the right end of the first switch 3a in the figure. In this case, after the failure of the failed first variable voltage variable frequency converter 2a is restored, the first switch 3a may be switched to the normal state.
【００１０】[0010]
【発明の効果】以上のようにこの発明によれば、第１と
第２の可変電圧可変周波数変換器と負荷に電力を供給す
る第１と第２の切換器とを相互に接続するとともに、第
１と第２の切換器のそれぞれを商用電源と接続した構成
としたので、高価な可変電圧可変周波数変換器の予備機
を必要とせず。経済性を向上できるという効果が得られ
る。As described above, according to the present invention, the first and second variable voltage variable frequency converters and the first and second switching devices for supplying power to the load are connected to each other, and Since each of the first and second switching devices is connected to the commercial power source, an expensive backup device for the variable voltage variable frequency converter is not required. The effect is that economic efficiency can be improved.
【図１】この発明の実施例１による可変電圧可変周波数
変換器の切換装置を示す構成図である。FIG. 1 is a configuration diagram showing a switching device of a variable voltage variable frequency converter according to a first embodiment of the present invention.
【図２】従来の可変電圧可変周波数変換器の切換装置を
示す構成図である。FIG. 2 is a configuration diagram showing a switching device of a conventional variable voltage variable frequency converter.
１ 電源 ２ 可変電圧可変周波数変換器 ３ 切換器 ４ 可変電圧可変周波数変換装置 ５ 負荷 1 power source 2 variable voltage variable frequency converter 3 switching device 4 variable voltage variable frequency converter 5 load
Claims (1)
周波数変換器と、この可変電圧可変周波数変換器と接続
され負荷に電力を供給する複数極の切換器を有し、上記
負荷に電力を供給する可変電圧可変周波数変換器を上記
切換器で切り換えるようにした可変電圧可変周波数変換
器の切換装置において、第１と第２の可変電圧可変周波
数変換器と負荷に電力を供給する第１と第２の切換器と
を相互に接続するとともに、上記第１と第２の切換器の
それぞれを商用電源と接続したことを特徴とする可変電
圧可変周波数変換器の切換装置。1. A plurality of variable voltage variable frequency converters connected to a power source, and a plurality of pole changers connected to the variable voltage variable frequency converters for supplying electric power to a load, the electric power being supplied to the load. In the switching device of the variable voltage variable frequency converter, wherein the variable voltage variable frequency converter for supplying the power is switched by the switching device, the first and second variable voltage variable frequency converters and the load are supplied with electric power. And a second switching device are connected to each other, and each of the first and second switching devices is connected to a commercial power source, and a switching device for a variable voltage variable frequency converter.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4267118A JPH06121473A (en) | 1992-10-06 | 1992-10-06 | Changeover device for variable-voltage to variable-frequency converter |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| JP4267118A JPH06121473A (en) | 1992-10-06 | 1992-10-06 | Changeover device for variable-voltage to variable-frequency converter |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| JPH06121473A true JPH06121473A (en) | 1994-04-28 |
Family
ID=17440323
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| JP4267118A Pending JPH06121473A (en) | 1992-10-06 | 1992-10-06 | Changeover device for variable-voltage to variable-frequency converter |
Country Status (1)
| Country | Link |
|---|---|
| JP (1) | JPH06121473A (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8581528B2 (en) | 2010-04-15 | 2013-11-12 | Abb Oy | Arrangement and method for controlling frequency converter modules |
| CN105186678A (en) * | 2015-08-31 | 2015-12-23 | 山东碧空环保科技股份有限公司 | Method for fault switching of frequency converters of induced draft fan |
| CN107889307A (en) * | 2017-11-02 | 2018-04-06 | 宁波市江北九方和荣电气有限公司 | A kind of vehicle passenger cab illumination redundancy backup power supply circuit and control method |
-
1992
- 1992-10-06 JP JP4267118A patent/JPH06121473A/en active Pending
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8581528B2 (en) | 2010-04-15 | 2013-11-12 | Abb Oy | Arrangement and method for controlling frequency converter modules |
| CN105186678A (en) * | 2015-08-31 | 2015-12-23 | 山东碧空环保科技股份有限公司 | Method for fault switching of frequency converters of induced draft fan |
| CN107889307A (en) * | 2017-11-02 | 2018-04-06 | 宁波市江北九方和荣电气有限公司 | A kind of vehicle passenger cab illumination redundancy backup power supply circuit and control method |
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